Heat dispensing device

ABSTRACT

A heat dispensing device includes a tubular body with a contact end and a dispensing end. A plurality of fins is integrally connected on outside of the dispensing end so as to increase the area for dispensing heat. The heat is absorbed from the contact end and quickly and directly conducted to the dispensing end to have an optimal efficiency for removing heat from a heat source.

FIELD OF THE INVENTION

The present invention relates to a heat dispensing device, and moreparticularly, to a heat dispensing device for cooling a heat source suchas a CPU of a computer.

BACKGROUND OF THE INVENTION

A central processing unit (CPU) generates a heat due to high speedoperation to thus cause high temperature which could damage the CPU sothat a heat dispensing device cooperated with a fan is equipped toremove the heat from the CPU. Except for increasing length of a heatdispensing device, to have multiple fins “c” on the surface of a tubularbody “a” of a dispensing device is a common way to increase theefficiency for dispensing heat as shown in FIG. 6.

The fins “c” are attached with the tubular body “a” by an adhesive “d”or a soldering agent so that the heat of a heat source “b” is dispensedoutward by the fins “c”. Using the adhesive “d” or the soldering agentto connect the fins “c” to the tubular body “a” is a main stream for theconventional heat dispensing devices. However, due to the limited heatdispensing effect of the adhesive “d” or the soldering agent, thedispensing device has less efficiency for dispensing heat. Even effortsare made to improve the contents or formula of the adhesive “d” or thesoldering agent; the heat cannot completely or satisfactorily be removedfrom the heat source “b” by the fins “c”.

SUMMARY OF THE INVENTION

It is a main objective of the present invention to provide a heatdispensing device which includes integral fins on the body of thedispensing device without using any adhesive or soldering agent so as toincrease the area for dispensing heat from a heat source and obtain theoptimal efficiency of heat removal.

In order to achieve the objective mentioned above, the heat dispensingdevice of the present invention includes a tubular body which has acontact end and a dispensing end which includes a plurality of fins sothat a heat from the contact end is passed quickly to the dispensing endto obtain a satisfactory efficiency of dispensing heat.

The present invention will become more obvious from the followingdescription when taken in connection with the accompanying drawings,which show, for purposes of illustration only, a preferred embodiment inaccordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show a first embodiment of a heatdispensing device of the present invention;

FIG. 2 is another perspective view of the first embodiment for a firstend of the heat dispensing device contacting with a heat source in use;

FIG. 3 is a further sectional view of the first embodiment taken alongthe line A-A′ of FIG. 2, showing a heat being brought into air from finson the heat dispensing device in use;

FIG. 4 is a perspective view of a second embodiment for a first end of aheat dispensing device being a flat board;

FIG. 5 is a perspective view of a third embodiment for a first end of aheat dispensing device being bent into an S-shaped end; and

FIG. 6 is a cross-sectional view of a conventional heat dispensingdevice.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 3, a heat dispensing device of the presentinvention comprises a tubular body 1 which has a contact end 11 and adispensing end 12. A plurality of curve fins 2 is integrally connectedto the outside of the dispensing end 12.

When the contact end 11 is in contact with a heat source 3 (or die), thehigh temperature of the heat source 3 is passed through the contact end11 of the body tubular 1 and conducted to the dispensing end 12.

In practice, the tubular body 1 made of a material with highly heatconductivity, such as silver, is prepared, and a plurality of curve fins2 is made on the outside surface of the dispensing end 12 of the tubularbody 1 with one step of machining, such as by the way of chip formationor molding process. The fins 2 are made to have the same curvature andlocated at equal distance from each other. When the dispensing end 12 isput on the heat source 3 such as a CPU, the heat of the heat source 3 istransferred and conducted toward the dispending end 12 via the area ofthe contact end 11 of the tubular body 1. The heat is dispensed out fromthe fins 2 on the dispensing end 12. Furthermore, due to a certaindistance between the dispensing end 12 and the heat source 3, the heatcould dispense out from the tubular body 1 so that the temperature ofthe heat source 3 will not increase.

As shown in FIG. 4, the contact end 11 of the tubular body 1 can be aflat board which can be put on the heat source 3 and has larger contactarea with the heat source 3 so that the heat can be conducted at higherrate.

As shown in FIG. 5, the contact end 11 of the tubular body 1 may also bebent into an S-shaped end, which includes larger contact area when beingput on the heat source 3 to quickly remove the high temperature.

Furthermore, although the drawings do not disclose, the tubular body 1can use a vacuum pipe except having working fluid therein that betterheat dissipating is obtained.

Accordingly, the main character of the present invention is that thefins 2 are made directly on the outside of the dispensing end 12 by theway of chip formation, molding process, or any known one-step machiningmethod to increase the area for dispensing heat. The fins 2 need noadhesive or soldering agent which has lower efficiency for conductingheat to attach with the tubular body. The heat dispensing device of thepresent invention thus has simple structure and is easily manufactured.The heat can be quickly and directly conducted to the dispensing end 12without any obstructions such as the adhesive or soldering agent, sothat the heat dispensing efficiency is improved.

While we have shown and described the embodiments in accordance with thepresent invention, it should be clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A heat dispensing device for using on an electronic devicecomprising: a tubular body made of a material with high heatconductivity, said body having a contact end in contact with a hightemperature portion of the electronic device and a dispensing end havingan outside surface including a plurality of curved fins extending fromsaid outside surface and each curved fin formed integrally on thedispensing end of the body, so that heat generated by the electronicdevice is transferred to the dispensing end via the contact end of thebody and wherein the curved fins have the same curvature and are locatedat equal distances from one another.
 2. The device as claimed in claim1, wherein the contact end of the body is a flat board.
 3. The device asclaimed in claim 1, wherein the contact end of the body is bent into anS-shaped end.
 4. The device as claimed in claim 1, wherein the fins aremade within one-step of machining process.
 5. The device as claimed inclaim 1, wherein the fins are made by the way of chip formation, orformed directly by cutting the surface of the body.
 6. The device asclaimed in claim 1, wherein the body is a vacuum pipe having workingfluid therein.